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Question

嗨，我有以下查询，但它仍然给我指定不给我的结果。这有什么问题？

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180211%' and taxonomic_units.tsn not in ('180212') order by rand() limit 1

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180210%' and taxonomic_units.tsn not in ('180212,573165') order by rand() limit 1

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180130%' and taxonomic_units.tsn not in ('180212,573165,573165') order by rand() limit 1

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%179913%' and taxonomic_units.tsn not in ('180212,573165,573165,585192') order by rand() limit 1

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%158852%' and taxonomic_units.tsn not in ('180212,573165,573165,585192,624896') order by rand() limit 1

这是带有重复项的结果，我的 not in 声明应该过滤掉那些，但它没有。

0   180212
1   573165
2   573165
3   632899
4   632141
5   647171

Answer 1

使用此查询：

select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id   
   from hierarchy 
       left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn 
       where taxonomic_units.rank_id = 220 
             and hierarchy.hierarchy_string LIKE '%158852%' 
             and taxonomic_units.tsn not in ('180212','573165','573165','585192','624896') 
      order by rand() limit 1

您需要'在所有值上添加，因为它们是不同的值。而且您在开头和结尾都将其视为单个字符串。